A pre-treatment coating composition includes evaporable liquid vehicle and a pre-treatment coating matrix, including from 30 wt % to 70 wt % multivalent organic salt, from 5 wt % to 30 wt % dispersed polyurethane binder having a weight average molecular weight from 30,000 Mw to 100,000 Mw, from 0.5 wt % to 8 wt % of a high molecular weight polyvinyl alcohol binder, and from 10 wt % to 30 wt % of a low molecular weight polyvinyl alcohol binder. The low molecular weight polyvinyl alcohol binder and the high molecular weight polyvinyl alcohol binder are present in the pre-treatment coating matrix at a 3:1 to 15:1 weight ratio, and weight percentages are based on dry weight of the pre-treatment coating matrix.

According to an example aspect of the present invention, there is provided a paperboard structure, comprising: a support layer comprising paperboard; a filler layer on top of and in direct contact with the support layer, the filler layer comprising an inorganic filler and a polyolefin; and a plastic coating layer on top of the filler layer and forming the outermost layer of the paperboard structure, the plastic coating layer comprising a polyolefin.

An environmentally-regulated portable musical instrument case is provided which can insulate the musical instrument from external temperature and humidity changes. The case has an internal cavity designed to hold the musical instrument. The walls of the cavity are designed to reduce thermal transfer between the internal cavity and the surrounding environment. A temperature regulating apparatus actively or passively further controls the temperature of the internal cavity while a humidity control device controls the humidity.

Provided are heat insulating sheets that may include a resin film having a metal layer and a nonwoven fabric including resin fiber, wherein the resin film and the nonwoven fabric are joined by through holes penetrating the resin film and the nonwoven fabric, and wherein a ratio (La/Lb) of an average distance (La) between the through holes in the resin film to an average distance (Lb) between the through holes in the nonwoven fabric is 1.001 or more and 1.10 or less. Further provided are manufacturing methods of a heat insulating sheet that may include a resin film having a metal layer and a nonwoven fabric including a resin fiber.

A sheet packaging material for producing a sealed package comprises two first boundary edges parallel to a longitudinal direction and two second boundary edges parallel to a transversal direction orthogonal to the longitudinal direction. The sheet packaging material includes at least a bottom transversal crease line including a bottom central portion, a bottom end portion and a bottom side portion. The sheet packaging material includes a pair of slanted crease lines inclined relative to both the longitudinal and transverse directions. The slanted crease lines have first ends pointing to one of the second boundary edges and second ends pointing to a continuous line parallel to the transversal direction and including the bottom central portion and the bottom end portion. The slanted crease lines delimit, with the bottom side portion, a flap area of the sheet packaging material designed to form at least part of a lateral flap of the package.

Provided are a resin composition having excellent oxygen barrier property under high humidity as a novel resin material, a molded body, a method for producing a molded body, and a method for producing a pellet using the resin composition. The resin composition includes a resin component and a plate-shaped talc having an aspect ratio of more than 18, 80 mass % of the resin component comprising a barrier resin having an oxygen transmission coefficient of 5.0 cc.Math.mm/(m.sup.2.Math.day.Math.atm) or less as measured according to ASTM D3985 at a relative humidity of 60% and a temperature of 23° C., and a content of the plate-shaped talc being from 3.0 to 55.0 mass % when a total of the barrier resin and the plate-shaped talc is 100 mass %.

A composite board structure and a box structure. According to the composite board structure, by using through holes (214) and pits (21), under the condition of greatly reducing the material and manufacturing costs, the structural performance of the board is improved, and the bending strength of the board is improved, so that the board can replace the existing boards such as corrugated paper, can be applied to structures such as a box, can replace the existing board and box structures under the condition of greatly reducing the material and manufacturing costs, can also be repeatedly used, and has great contribution to environmental protection and related industries.

A multilayer corrugated board which can be smoothly bent from a planar state to a curved state without failure even at small radii of curvature, as well as a container made from such board. The materials and mechanical properties of the layers of the board are selected such that each layer inward of the outermost layer in the bent state buckles simultaneously and reversibly between each flute of the adjacent innermost corrugated layer.

It is related to a packaging tube in which a laminate body uses a multilayer barrier film having an ethylene copolymer and a vinyl alcohol (EVOH) layer, and this tube can be used for contents such as cosmetics, hair-dye products, toothpastes, pharmaceutical creams, and so on. It is to provide a bounce-back property, preservation of contents and a flavor barrier property to a tube by forming a tube body from a laminate comprising an inner layer of a polyolefin resin, an intermediate layer of a gas-barrier resin and an outer layer of a polyolefin resin.

A repulpable insulated container assembly having a container formed of paper such as corrugated cardboard or varying paper materials and defining an interior; and a repulpable insert placed within the interior of the container and formed of a first paper layer; and a paper fiber pad coupled to the first paper layer.